@CHARSET "UTF-8";
*{
	padding:0;
	margin:1px;
}
h1{
	text-align: center;
}
   #calculater{
       margin: auto;
       margin-top: 30px;
       border: solid 6px #2371D3;
       border-spacing: 0px;
   }
   #display{
	width: 100%;
	height: 30px;
	border-bottom: solid 4px #2371D3;
	font-weight: bold;
	color: #193D83;
	font-family: 黑体;
	padding-left: 2px;
	font-size: 40px;
   }
   .numberkey{
	cursor: pointer;
	width: 100px;
	height: 30px;
	border: solid 1px #FFFFFF;
	background: #2371D3;
	color: #ffffff;
	text-align: center;
	font-weight: bold;
	font-family: 黑体;
	font-size: 40px;
   }
   #equality{
	cursor: pointer;
	width: 40px; 
	height: 100%;
	background: #2371D3;
	border: solid 1px #FFFFFF;
	color: #ffffff;
	text-align: center;
	font-weight: bold;
	font-family: 黑体; 
   }
   .numberkey:hover{
      background: #EA6F30; 
   }
   #equality:hover{
      background: #EA6F30; 
   }